Wrench for a gas meter



FIG. 1 is an isometric view of a wrench for a gas meter showing my new design;

FIG. 2 is a front elevational view thereof with the rear elevational view being identical but reversed;

FIG. 3 is a top plan view thereof with the bottom plan view being identical; and,

FIG. 4 is a right side elevational view thereof with the left side elevational view being identical. 

The ornamental design for a wrench for a gas meter, as shown. 